Preparation method of fish oil

A fish oil and rough extraction technology, which is applied in the fields of fat oil/fat refining, edible oil/fat, fat oil/fat production, etc. It can solve the problems of low extraction rate, production stagnation, and reduction of fish catch, so as to improve the extraction volume and purity , prevent the production of odorous substances, and improve the extraction rate of fish oil

Inactive Publication Date: 2018-01-16
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the development of the global fish oil market is also faced with some constraints, such as production stagnation or even a reduction in production, and the unpredictable El Niño phenomenon has caused a reduction in fish catches, which has brought a negative impact on the fish oil market and further restricted the development of the fish oil market
[0005] The current extraction process of fish oil still has the problem of low extraction rate, which leads to the waste of raw materials, and the method with high extraction rate has the problem of low purity, which makes the follow-up process complicated.

Method used

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  • Preparation method of fish oil

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Effect test

Embodiment 1

[0021] A kind of preparation method of fish oil, concrete steps are as follows:

[0022] 1) Raw material processing: take the discarded internal organs of the fish for processing, wash them twice, mince them, add 0.6 times the water of the minced products to obtain a homogenate, ultrasonic treatment, 380w ultrasonic treatment at 42°C for 12s, let stand for 35s, and 54°C Under 150w ultrasonic treatment for 22s, repeat the above operation 3 times;

[0023] 2) Crude extraction of fish oil: Mix the homogenate to a pH value of 8.7, stir and heat to 85°C, keep for 40 minutes, add salt with a mass of 5% of the homogenate, stir and homogenize for 15 minutes, filter with double-layer gauze or nylon cloth, press the filter residue, and combine Filtrate and squeeze liquid to get crude fish oil;

[0024] 3) Fish oil essence extraction: Take the crude fish oil, add 0.035% tert-butyl hydroquinone and 0.0026% glucosamine sulfate by weight of the crude fish oil, heat in a water bath to 74°C,...

Embodiment 2

[0027] A kind of preparation method of fish oil, concrete preferred steps are as follows:

[0028] 1) Raw material processing: take the discarded internal organs of the fish for processing, wash them twice, mince, add 1 times the amount of water to obtain a homogenate, ultrasonic treatment, 500w ultrasonic treatment at 43°C for 12s, let stand for 38s, and 55°C Under 200w ultrasonic treatment for 24s, repeat the above operation 2 times;

[0029] 2) Crude extraction of fish oil: Mix the homogenate to a pH value of 9.0, stir and heat to 85°C, keep for 42 minutes, add salt with a mass of 5% of the homogenate, stir and homogenize for 15 minutes, filter with double-layer gauze or nylon cloth, press the filter residue, and combine Filtrate and squeeze liquid to get crude fish oil;

[0030]3) Fish oil essence extraction: take the crude fish oil, add 0.03% tert-butyl hydroquinone and 0.002% glucosamine sulfate by weight of the crude fish oil, heat in a water bath to 75°C, stir and add...

Embodiment 3

[0033] A kind of preparation method of fish oil, concrete steps are as follows:

[0034] 1) Raw material processing: take the discarded internal organs of the fish for processing, wash them three times, mince them, add 0.7 times the water of the minced products to obtain a homogenate, ultrasonic treatment, 400w ultrasonic treatment at 44°C for 15s, let stand for 40s, and 53°C Under 200w ultrasonic treatment for 25s, repeat the above operation 3 times;

[0035] 2) Crude extraction of fish oil: Mix the homogenate to a pH value of 8.8, stir and heat to 86°C, keep for 40 minutes, add 5% salt of the homogenate, stir and homogenate for 15 minutes, filter with double-layer gauze or nylon cloth, press the filter residue, and combine Filtrate and squeeze liquid to get crude fish oil;

[0036] 3) Fish oil essence extraction: Take the crude fish oil, add 0.035% tert-butyl hydroquinone and 0.003% glucosamine sulfate by weight of the crude fish oil, heat in a water bath to 75°C, stir and ...

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Abstract

The invention provides a preparation method of fish oil and belongs to the technical field of preparation of fish oil. The preparation method comprises preparation steps as follows: 1) raw material treatment: discarded internal organs during fish processing are taken, cleaned, minced and mixed with water, and homogenate is obtained and subjected to ultrasonic treatment; 2) crude extraction of thefish oil: the pH value of the homogenate is adjusted, the homogenate is stirred and heated, table salt is added, the mixture is stirred, homogenized, and filtered, filter residues are pressed, filtrate and a pressed liquid are mixed, and crudely extracted fish oil is obtained; 3) fine extraction of the fish oil: the crudely extracted fish oil is taken and mixed with tert-butylhydroquinone and glucosamine sulfate, the mixture is subjected to water-bath heating, a degelation agent and hot water are added with stirring, the mixture is stirred and centrifuged, upper fish oil subjected to degelation is taken, deacidified, decolored, deodorized and cooled, and fine extracted fish oil is obtained. Oxidation of the prepared fish oil by unsaturated fatty acid is avoided, and the extraction rate isincreased on the premise that the extraction purity is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of fish oil preparation, and in particular relates to a preparation method of fish oil. Background technique [0002] Fish oil is the main source of fatty acids. Fatty acids have many benefits to the human body. With the continuous improvement of people's awareness of the importance of Omega-3 fatty acids, the fish oil consumption market is steadily expanding. In the past few years, with more and more Many people add fish oil products containing omega-3 fatty acids to their daily diet, and the demand for fish oil is growing exponentially. [0003] At present, the global market value of fish oil reaches 1.1 billion US dollars. From 2015 to 2018, calculated at a compound annual growth rate of 5.05%, it is estimated that by 2018, the global market value of fish oil will reach 1.7 billion US dollars. [0004] However, the development of the global fish oil market is also faced with some constraints, such as sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/02C11B1/10C11B3/00C11B3/04C11B3/06C11B3/10C11B5/00A23D9/04
Inventor 罗红宇张飞王春利
Owner ZHEJIANG OCEAN UNIV
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